<template> <div class="app-container">

<!--查询表单-->
<el-form :inline="true" class="demo-form-inline"> 
        <el-form-item> 
            <el-input v-model="courseQuery.title" placeholder="课程名称"/>
    </el-form-item> 
    <el-form-item label="课程状态">
        <el-input v-model="courseQuery.status" placeholder="Draft/Normal"></el-input>
    </el-form-item>

    <el-button type="primary" icon="el-icon-search" @click="getList()">查 询</el-button> 
    <el-button type="default" @click="resetData()">清空</el-button>
</el-form>
    


        <!-- 表格 -->
<el-table
        v-loading="listLoading"
        :data="list"
        element-loading-text="数据加载中"
        border
        fit
        highlight-current-row> 
        <el-table-column
        label="序号"
        width="70"
        align="center"> <template slot-scope="scope">
        {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
        </el-table-column> 
        <el-table-column prop="title" label="课程名称名称" width="180" />
        <el-table-column label="课程状态" width="180"> 
            <template slot-scope="scope">
        {{ scope.row.status==='Normal'?'已发布':'未发布' }}
        </template>
        </el-table-column> 
        <el-table-column prop="price" label="课程价格" />
         <el-table-column prop="lessonNum" label="课程学时" />
        <el-table-column prop="gmtCreate" label="添加时间" width="220"/>
        <el-table-column prop="viewCount" label="浏览数量" width="150" />
        <el-table-column label="操作" width="200" align="center">
             <template slot-scope="scope">
                 <router-link :to="'/teacher/edit/'+scope.row.id"> 
                 <el-button type="primary" size="mini" icon="el-icon-edit">编辑课程基本信息</el-button>
        </router-link>
            <router-link :to="'/teacher/edit/'+scope.row.id"> 
                 <el-button type="primary" size="mini" icon="el-icon-edit">编辑课程大纲信息</el-button>
        </router-link>
         <el-button type="danger" size="mini" icon="el-icon-delete"
    @click="removeCourseBy(scope.row.id)">删除课程的信息</el-button>
     </template>
     </el-table-column>
     </el-table>
     <!-- 分页 -->
                <el-pagination
                :current-page="page"
                :page-size="limit"
                :total="total"
                style="padding: 30px 0; text-align: center;"
                layout="total, prev, pager, next, jumper"
                @current-change="getList"
                />
     </div>
</template>



<script>
// 引入调用teacher.js文件
import course from '@/api/edu/course'

export default {    
    //写核心代码位置
    // data:{

    // },
    data(){ //定义变量和初始值
        return {
            list:null ,   //条件查询之后接口返回集合
            page:1,     //当前页
            limit:8,   //每页记录数
            total:0,  //总记录数
            courseid:'',
            courseQuery:{}     //条件查询对象
        }
    },
    created(){   //页面渲染之前执行
        //调用
        this.getList()

    },
    methods:{  
        //强制更新课程状态的值
 

    
               handleSelectChange() {
        this.$forceUpdate()
    },
        
        //创建具体方法，调用teacher.js定义的方法
           getList(page=1){   //条件查询带分页
                    this.page=page
                //m没有提示
               course.getCourseListPage(this.page,this.limit,this.courseQuery)
               .then(response =>{
                //请求成功
                //reponse返回数据
               // console.log(response)
              this.list= response.data.rows
              this.total=response.data.total
         
               })
               .catch(error=>{
                //请求失败
                console.log(error)
               })
            },
            //清空
            resetData() {
                //表单输入项数据清空
                this.courseQuery={}

                //查询所有讲师数据
                this.getList()
              
            },
           
            //删除讲师的方法
       removeCourseBy(id) {
                this.$confirm("此操作将永久删除课程记录, 是否继续?", "提示", {
                    confirmButtonText: "确定",
                    cancelButtonText: "取消",
                    type: "warning"
                }).then(() => {
                    //点击确定，执行then方法
                    //调用删除的方法
                    course.removeCourse(id).then(response => {
                    //删除成功
                    //提示信息
                    this.$message({
                        type: "success",
                        message: "删除成功!"
                    });
                    //回到列表页面
                    this.getList();
                    });
                }); //点击取消，执行catch方法
                }
            
    }
}
</script>
